Included: marks, meaning signs, slogans, and symbols that are source-identifying in a trademark law sense. Many of these are registered marks, but not all of them.

Not included: Just about anything can be a mark, under contemporary trademark law. So almost anything goes.

• “That Good Gulf Gasoline,” owned by Gulf Oil Corporation
• “57 Varieties,” owned by H.J. Heinz Co. [history of the mark]
• “It’s a beautiful day in this neighborhood,” owned by The McFeeley-Rogers Foundation (in connection with Mister Rogers’ Neighborhood); originally registered by Fred Rogers
• “Won’t you be my neighbor?,” owned by The McFeeley-Rogers Foundation (in connection with Mister Rogers’ Neighborhood); originally registered by Fred Rogers
• “BIG MAC,” owned by McDonald’s Corporation [the Big Mac sandwich was developed in Pittsburgh to compete with the “Big Boy” sandwich then offered by local chain Eat’n Park] [feat. an early Big Mac TV commercial]

• “Miss Olde Frothingslosh,” owned by Pittsburgh Brewing Company [hoax labels]
• “Light Up Night,” owned by the Pittsburgh Downtown Partnership (part of the Allegheny Conference on Community Development)
• “You can be sure … if it’s Westinghouse,” owned by the Westinghouse Electric Corporation
• “Have a Duke!,” owned by Duquesne Brewing Co.
• “Fort Pitt … That’s It!,” owned by the Fort Pitt Brewing Co.
• “Clark,” now owned by The Boyer Candy Company

• “A Great Day for Hockey,” owned by the Pittsburgh Penguins [the slogan is an homage to late coach “Badger” Bob Johnson]
• “What would you do for a Klondike Bar?, ” owned originally by The Isaly Dairy Co. [feat. the original 1982 TV commercial]
• “Home of the original Pittsburgh sandwich,” owned by Primanti Brothers
• “The center of attraction” in candy bars, owned by D.L. Clark Co.
• “Live well,” owned by General Nutrition Investment Co. (GNC)